{"id":921032,"url":"https://alion.io/job/lambda-staff-hpc-network-architect","title":"Staff HPC Network Architect","company":{"id":32991,"name":"Lambda","domain":"lambda.ai","url":"https://alion.io/company/lambda-ai","size_band":"501-1000","is_staffing_agency":false,"employer_type":"direct","is_intermediary":false,"listed_via":null,"ats_vendor":"Ashby","truth_index":{"grade":"A","score":88,"open_postings":8,"ghost_share":0,"stale_share":0.5,"repost_share":0,"time_to_fill_p50_days":48,"computed_at":"2026-11-03T05:54:40Z"}},"role":"Networking","role_family":"Networking","seniority":"staff","employment_type":"full_time","work_mode":"hybrid","remote_scope":null,"remote_scope_basis":null,"remote_working_hours":null,"hiring_geo_confidence":"structured","locations":["San Jose, United States","San Francisco, United States"],"countries":["US"],"hiring_countries":[],"hiring_countries_total":0,"salary":{"min":284000,"max":420000,"currency":"USD","period":"year","gross":null,"usd_annual":420000},"salary_estimate":null,"experience_years_min":7,"visa_sponsorship":false,"relocation_package":false,"has_equity":true,"technologies":[{"name":"AWS Lambda","optional":false},{"name":"BGP","optional":false},{"name":"HPC","optional":false},{"name":"InfiniBand","optional":false},{"name":"AWS","optional":true},{"name":"Machine Learning","optional":true},{"name":"NCCL","optional":true}],"status":"live","first_seen_at":"2026-09-14T19:49:48Z","employer_posted_date":"2026-09-14","last_verified_at":"2026-11-03T14:01:37Z","board_verified":true,"closed_at":null,"days_open":49,"trust":{"level":"ok","repost_count":null,"flags":[],"days_open":49},"description":"Lambda, The Superintelligence Cloud, is a leader in AI cloud infrastructure serving tens of thousands of customers. Our customers range from AI researchers to enterprises and hyperscalers. Lambda's mission is to make compute as ubiquitous as electricity and give everyone the power of superintelligence. One person, one GPU.\nIf you'd like to build the world's best AI cloud, join us.\n*Note: This position requires presence in our San Jose, San Francisco, or Bellevue office location 4 days per week; Lambda’s designated work from home day is currently Tuesday.\nWhat You’ll Do\nArchitect high-performance networking solutions that power cloud platforms, with a focus on ultra-low-latency and high-bandwidth connectivity.\n\nDefine the network topology and architectural patterns for large-scale GPU clusters, storage backends, and multi-tenant environments.\n\nEvaluate, benchmark, and select next-generation network technologies (e.g., InfiniBand NDR/XDR, RoCE, 400G-1.6T Ethernet, Ultra Ethernet, ESUN, OCI, etc) to meet AI workload requirements.\n\nDevelop and maintain network architecture standards, reference designs, and scalability roadmaps for multi-site and hybrid environments.\n\nPartner with compute and storage architects to ensure seamless end-to-end data flow and fault tolerance.\n\nGuide network automation strategies and tooling to enable efficient provisioning, telemetry, and operational visibility.\n\nMentor engineers and cross-functional teams on advanced network concepts, troubleshooting, and architectural best practices.\n\nYou\nProven experience (7+ years) architecting high-performance data center networks, preferably for HPC, AI/ML, or large-scale cloud infrastructure.\n\nDeep expertise with InfiniBand (HDR/NDR) and advanced Ethernet fabrics, including RoCE and RDMA protocols.\n\nStrong understanding of data center switching architectures, congestion control (PFC, ECN), QoS, and network virtualization technologies such as VXLAN and EVPN.\n\nSkilled in designing for low-latency and high-throughput data paths, including GPU-to-GPU and storage traffic optimization.\n\nExpertise with BGP-based fabric design, including eBGP underlays, MP-BGP EVPN, ECMP, route policy, and convergence.\n\nExperience with SDN, APIs, automation, and network telemetry.\n\nStrong optical networking competency, including transceiver technologies, fiber types and topologies, link budgets, breakout architectures, and WDM.\n\nExperience building resilient, fault-tolerant high-performance network architectures with redundancy, failover, and high availability.\n\nExcellent communication and leadership skills, capable of influencing technical decisions across diverse teams.\n\nStrong ownership and can do attitude, self-starter who feels comfortable working in ambiguity.\n\nNice to Have\nHands-on experience with AI workload profiling, collective communication patterns (e.g., NCCL, MPI), and network tuning for distributed training.\n\nFamiliarity with network automation frameworks and telemetry tools.\n\nExposure to DPU/SmartNIC technologies, including NVIDIA BlueField, or similar.\n\nKnowledge of large-scale, multi-site interconnect design, including DWDM or metro/long-haul networking.\n\nExperience collaborating with hyperscale or enterprise customers on highly customized network designs.\n\nSalary Range Information\nThe annual salary range for this position has been set based on market data and other factors. However, a salary higher or lower than this range may be appropriate for a candidate whose qualifications differ meaningfully from those listed in the job description.\nAbout Lambda\nFounded in 2012, with 500+ employees, and growing fast\n\nOur investors notably include TWG Global, US Innovative Technology Fund (USIT), Andra Capital, SGW, Andrej Karpathy, ARK Invest, Fincadia Advisors, G Squared, In-Q-Tel (IQT), KHK & Partners, NVIDIA, Pegatron, Supermicro, Wistron, Wiwynn, Gradient Ventures, Mercato Partners, SVB, 1517, and Crescent Cove\n\nWe have research papers accepted at top machine learning and graphics conferences, including NeurIPS, ICCV, SIGGRAPH, and TOG\n\nOur values are publicly available: https://lambda.ai/careers\n\nWe offer generous cash & equity compensation\n\nHealth, dental, and vision coverage for you and your dependents\n\nWellness and commuter stipends for select roles\n\n401k Plan with 2% company match (USA employees)\n\nFlexible paid time off plan that we all actually use\n\nEqual Opportunity Employer\nLambda is an Equal Opportunity employer. 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